CS8785 error after updating from 8.0.304 to 8.0.306 SDK

### Describe the bug
After updating the .NET 8 SDK from 8.0.304 to the latest 8.0.306 some or our projects targeting framework net8.0-windows10.0.19041 fail with error.
We use Visual Studio 2022 17.10.7.

```
CSC : error CS8785: Generator 'WinRTAotSourceGenerator' failed to generate source. It will not contribute to the output and compilation errors may as a result. Exception was of type 'IndexOutOfRangeException' with message 'Index was outside the bounds of the array.'
```
and
```
C:\Development\RepoName\.int\Debug\projectname\net8.0-windows10.0.19041\win-x64\WinRT.SourceGenerator\Generator.WinRTAotSourceGenerator\WinRTGlobalVtableLookup.g.cs(5,19): error CS0116: A namespace cannot directly contain members such as fields, methods or statements
```

We did find that adding this to our Directory.Build.props code base "resolves" the issue, though in the [documentation](https://github.com/dotnet/docs/blob/main/docs/core/project-sdk/msbuild-props.md#windowssdkpackageversion) we can read its not recommended to use this property.
For now we can keep this as a workarround, but we would like to understand the proper fix.
```
10.0.19041.34
```

### To Reproduce
I have not been able to reproduce this yet outside our own code base. We don't know where this code generator comes from and what it triggers.

### Exceptions (if any)
```
CSC : error CS8785: Generator 'WinRTAotSourceGenerator' failed to generate source. It will not contribute to the output and compilation errors may as a result. Exception was of type 'IndexOutOfRangeException' with message 'Index was outside the bounds of the array.'
```
and
```
C:\Development\RepoName\.int\Debug\projectname\net8.0-windows10.0.19041\win-x64\WinRT.SourceGenerator\Generator.WinRTAotSourceGenerator\WinRTGlobalVtableLookup.g.cs(5,19): error CS0116: A namespace cannot directly contain members such as fields, methods or statements
```
### Further technical details
.NET SDKs installed:
2.1.202 [C:\Program Files\dotnet\sdk]
2.1.512 [C:\Program Files\dotnet\sdk]
3.1.423 [C:\Program Files\dotnet\sdk]
5.0.416 [C:\Program Files\dotnet\sdk]
6.0.310 [C:\Program Files\dotnet\sdk]
6.0.427 [C:\Program Files\dotnet\sdk]
8.0.304 [C:\Program Files\dotnet\sdk]
8.0.306 [C:\Program Files\dotnet\sdk]

Visual Studio 2022 - 17.10.7

Windows 11 Version 23H2